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From "Michael McCandless (JIRA)" <>
Subject [jira] [Commented] (LUCENE-5178) doc values should expose missing values (or allow configurable defaults)
Date Tue, 03 Sep 2013 11:10:54 GMT


Michael McCandless commented on LUCENE-5178:

It sounds like we need to check the actual DVFormat for that field (_TestUtil.getDocValuesFormat("field"))
and then test whether that format supports missing values.

I think this failure can only happen if you explicitly set -Dtests.postingsformat, because
then we make an anon subclass of Lucene45 ( at line 194)
... so it sounds like in general we should not be using defaultCodecSupportsDocsWithField()
but rather something like defaultDVFormatSupportsDocsWithField(String field) ...
> doc values should expose missing values (or allow configurable defaults)
> ------------------------------------------------------------------------
>                 Key: LUCENE-5178
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Yonik Seeley
>             Fix For: 5.0, 4.5
>         Attachments: LUCENE-5178.patch, LUCENE-5178_reintegrate.patch
> DocValues should somehow allow a configurable default per-field.
> Possible implementations include setting it on the field in the document or registration
of an IndexWriter callback.
> If we don't make the default configurable, then another option is to have DocValues fields
keep track of whether a value was indexed for that document or not.

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